Tire pressure cap is an auxiliary tool for measuring tire pressure, locking tire pressure cap on top of the tire air nozzle, look directly at the color change in the transparent cover to judge the adequacy of the tire pressure, eliminating cumbersome of detecting by instruments. If a 15% reduction in tire pressure will cause your car to increase 6% of fuel consumption and twice tire wear , thereby increasing the risk by 30%. The tire pressure cap will remind you to pay attention to this.

Note: Make sure Tire Pressure Cap is tightened, when installing, check the color circle if in the normal range.